<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        * {
            padding: 0;
            margin: 0;
            box-sizing: border-box;
        }
        li:nth-child(1) {
            color: red;
        }
        p:nth-of-type(2) {
            color: blue;
        }
        ul {
            margin: 10px auto;
            width: 100px;
            height: 100px;
            box-shadow: -10px -10px 20px 0 #888888;
        }
        li {
            text-shadow:5px 5px 3px #888888;
        }
        div {
            margin: 10px auto;
            width: 100px;
            height: 200px;
            box-shadow: 10px 10px 20px 0 #888888;
            border-radius: 10px;
        }
        .box {
            width: 100px;
            height: 200px;
            background-color: #f00;
            border-radius: 10px 0;
        }
        @keyframes move {
            
        }
    </style>
</head>
<body>
    <ul>
        <li>1</li>
        <li>2</li>
        <li>3</li>
    </ul>
    <div>
        <p>p1</p>
        <span>span1</span>
        <p>p2</p>
        <span>span2</span>
        <p>p3</p>
        <span>span3</span>
    </div>
    <audio controls>
        <source src="./media/video.mp4" type="video/mp4">
    </audio>
    <video src="./media/video.mp4" controls></video>
    <div class="box move">

    </div>
</body>
</html>